5. 45x39mm Bulgarian 7 N6 53gr FMJ slow motion vs. ballistic gelatin

5. 45x39mm Bulgarian 7N6 53gr FMJ fired from AK74 at 10 feet distance from gelatin block. Maximum penetration depth (10 gelatin) Maximum temporary cavity 5. 43 Bullet expansion No expansion, no fragmentation Each block that the gelatin sits on is exactly 1 across and the spaces are exactly 1 across. 20 gelatin is tougher than 10 gelatin that is used for static gelatin testing. Check out more at: Website Blog